Improvement in fire-grates



G. R. MOORE. Furnace Grate.

No. 113,908. Patented'Apri118, 1871.

ILFETERS. PMOYO-UTHOGRAPHER, WASHINGFON. n C.

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GEORGE R. MOORE, OF PHILADELPHIA, PENNSYLVANIA.

Letters Patent No. 113,908, dated April 18, 1211.

IMPROVEMENT IN FlRE-GRATES.

The Schedule referred to in these Letters 'Patent and making part of the lame.

E, GEORGE E. Moons, ofPhiladelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain Improvements in Fire-Grates, of which the following is a specification.

The object of my invention is to provide a grate that will save the fine coal from wasting through it in kindling, poking, or cleaning the fire; and this I accomplish by constructing and arranging the grate-bars so as to afiord ample spaces for side draughts.

Also, agrate that may be mostly emptied of ashes and cinder from below and without disturbing thefire above; thisl accomplish by having one-half the bars fold or slide beneath the other half, and by hanging this lower series of bars sufliciently below the upper series to admit of an ample side or angular draught between them.

I also use quite small bars, so'placcdas' to scrape ofi the sliding ones when they are opened. I

I have also, in some instances, made the bars in the upper series to revolve; and it is quite obvious that all the bars in the upper series may be made hollow and connected with the steam-boiler exactly after the common form of all ordinary water-grates.

The drawing herewith presented shows one complete bar and the sides of two other bars in the upper series of bars, and two sliding bars in the lower series. I It is obvious that the bars may be increased to any number.

Figure 1 is a plan view of the bars in an ordinary frame taken from the top.

a, the frame.

I), bars in the upper series.

0, bars in the lower series.

Figure 2 is a plan view of the same taken from the bottom, and shows the levers d, andhow they are attached for operating the sliding bars I; c.

it entirely open; and these barsc c are operated at will by the levers d d. It is; seen, therefore, that in one position these bars must work with asidedraught, while in another they have a wide space and a direct draught.

The arrows show where the spaces are for draught and the direction in which the air passes to the fire.

The operation is obvious. When the sliding bars are directly below the spaces between the bars in the upper series they are considered clis'ed and no fine coal can fall down, and the side draughts supply all the air needed to sustain combustion as rapidly as may be desired.

When ashes and cinders are to be let down the sliding bars are to be operated for that purpose.

' I claim-- 1. The-upper andlower series of grate-bars working in combination, as b and c, substantially as and for the purpose herein set forth.

- 2. The little bars 6, substantially as and for the purpose herein set forth.

' GEO. R. MOORE.

Witnesses:

TH. DALLAS, HAMILTON EAKEN S. 

